1、SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirelyvoluntary, and its applicability and suitability for any particular use, including any patent infringement arising therefro
2、m, is the sole responsibility of the user.”SAE reviews each technical report at least every five years at which time it may be reaffirmed, revised, or cancelled. SAE invites your written comments and suggestions.Copyright 2006 SAE InternationalAll rights reserved. No part of this publication may be
3、reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying,recording, or otherwise, without the prior written permission of SAE.TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada)Tel: 724-776-4970 (outside USA)Fax: 724-
4、776-0790Email: custsvcsae.orgSAE WEB ADDRESS: http:/www.sae.orgPolyamide-Imide Bar, Rod, and Shapes20 Graphite - 3 Polytetrafluorethylene (PTFE) Filled1. SCOPE:1.1 Form: This specification covers a polyamide-imide plastic filled with graphite and polytetrafluoroethylene (PTFE) in the form of molded
5、bar, rod, and shapes.1.2 Application: See AMS 3670.2. APPLICABLE DOCUMENTS: See AMS 3670.3. TECHNICAL REQUIREMENTS: 3.1 Basic Specification: The complete requirements for procuring the product described herein shall consist of this document and the latest issue of the basic specification, AMS 3670.3
6、2 Material: Shall be molded polyamide-imide polymer filled with nominally 20% graphite and 3% polytetrafluoroethylene (PTFE).AEROSPACE MATERIAL SPECIFICATIONAMS 3670/2BIssued JAN 1981Revised JAN 1992Reaffirmed JAN 2006Superseding AMS 3670/2AAMS 3670/2B SAE AMS 3670/2B- 2 -3.3 Properties: The produc
7、t shall conform to the requirements shown in Table 1, determined on molded test specimens and in accordance with test methods specified in AMS 3670. Specimens for elevated temperature tests shall be held at the test temperature for not less than 30 minutes prior to testing. Values for tensile streng
8、th, elongation, flexural strength, and compressive strength shall be reported as the average of three determinations for each test; no individual value shall be less than 90% of the minimum average value specified.3.4 Properties: Shall be as shown in Table 2.4. QUALITY ASSURANCE PROVISIONS: See AMS
9、3670.5. PREPARATION FOR DELIVERY: See AMS 3670.TABLE 2 - PropertiesParagraph Property Value3.3.1 Color Black, as approvedon qualification3.3.2 Tensile Strength, minimum averageAt 23 C 1 (73 F 2)At 250 C 5 (482 F 9)18.0 ksi (124 MPa)5.0 ksi (34.5 MPa)3.3.3 Elongation, minimum averageAt 23 C 1 (73 F 2
10、) 5%3.3.4 Flexural Strength, minimum averageAt 23 C 1 (73 F 2)At 250 C 5 (482 F 9)24.0 ksi (165 MPa)5.0 ksi (34.5 MPa)3.3.5 Compressive Strength, minimum averageAt 23 C 1 (73 F 2) 16.5 ksi (114 MPa)3.3.6 Specific Gravity at 23/23 C(73/73 F) 1.48 - 1.53AMS 3670/2B SAE AMS 3670/2B- 3 -6. ACKNOWLEDGMEN
11、T: See AMS 3670.7. REJECTIONS: See AMS 3670.8. NOTES: See AMS 3670.8.1 The change bar ( l ) located in the left margin is for the convenience of the user in locating areas where technical revisions, not editorial changes, have been made to the previous issue of this specification. An (R) symbol to the left of the document title indicates a complete revision of the specification.
